_source/plugins/selection/plugin.js

   1 /*\r
   2 Copyright (c) 2003-2009, CKSource - Frederico Knabben. All rights reserved.\r
   3 For licensing, see LICENSE.html or http://ckeditor.com/license\r
   4 */\r
   5 \r
   6 (function()\r
   7 {\r
   8         // #### checkSelectionChange : START\r
   9 \r
  10         // The selection change check basically saves the element parent tree of\r
  11         // the current node and check it on successive requests. If there is any\r
  12         // change on the tree, then the selectionChange event gets fired.\r
  13         function checkSelectionChange()\r
  14         {\r
  15                 try\r
  16                 {\r
  17                         // In IE, the "selectionchange" event may still get thrown when\r
  18                         // releasing the WYSIWYG mode, so we need to check it first.\r
  19                         var sel = this.getSelection();\r
  20                         if ( !sel )\r
  21                                 return;\r
  22 \r
  23                         var firstElement = sel.getStartElement();\r
  24                         var currentPath = new CKEDITOR.dom.elementPath( firstElement );\r
  25 \r
  26                         if ( !currentPath.compare( this._.selectionPreviousPath ) )\r
  27                         {\r
  28                                 this._.selectionPreviousPath = currentPath;\r
  29                                 this.fire( 'selectionChange', { selection : sel, path : currentPath, element : firstElement } );\r
  30                         }\r
  31                 }\r
  32                 catch (e)\r
  33                 {}\r
  34         }\r
  35 \r
  36         var checkSelectionChangeTimer,\r
  37                 checkSelectionChangeTimeoutPending;\r
  38 \r
  39         function checkSelectionChangeTimeout()\r
  40         {\r
  41                 // Firing the "OnSelectionChange" event on every key press started to\r
  42                 // be too slow. This function guarantees that there will be at least\r
  43                 // 200ms delay between selection checks.\r
  44 \r
  45                 checkSelectionChangeTimeoutPending = true;\r
  46 \r
  47                 if ( checkSelectionChangeTimer )\r
  48                         return;\r
  49 \r
  50                 checkSelectionChangeTimeoutExec.call( this );\r
  51 \r
  52                 checkSelectionChangeTimer = CKEDITOR.tools.setTimeout( checkSelectionChangeTimeoutExec, 200, this );\r
  53         }\r
  54 \r
  55         function checkSelectionChangeTimeoutExec()\r
  56         {\r
  57                 checkSelectionChangeTimer = null;\r
  58 \r
  59                 if ( checkSelectionChangeTimeoutPending )\r
  60                 {\r
  61                         // Call this with a timeout so the browser properly moves the\r
  62                         // selection after the mouseup. It happened that the selection was\r
  63                         // being moved after the mouseup when clicking inside selected text\r
  64                         // with Firefox.\r
  65                         CKEDITOR.tools.setTimeout( checkSelectionChange, 0, this );\r
  66 \r
  67                         checkSelectionChangeTimeoutPending = false;\r
  68                 }\r
  69         }\r
  70 \r
  71         // #### checkSelectionChange : END\r
  72 \r
  73         var selectAllCmd =\r
  74         {\r
  75                 exec : function( editor )\r
  76                 {\r
  77                         switch ( editor.mode )\r
  78                         {\r
  79                                 case 'wysiwyg' :\r
  80                                         editor.document.$.execCommand( 'SelectAll', false, null );\r
  81                                         break;\r
  82                                 case 'source' :\r
  83                                         // TODO\r
  84                         }\r
  85                 },\r
  86                 canUndo : false\r
  87         };\r
  88 \r
  89         CKEDITOR.plugins.add( 'selection',\r
  90         {\r
  91                 init : function( editor )\r
  92                 {\r
  93                         editor.on( 'contentDom', function()\r
  94                                 {\r
  95                                         var doc = editor.document;\r
  96 \r
  97                                         if ( CKEDITOR.env.ie )\r
  98                                         {\r
  99                                                 // Other browsers don't loose the selection if the\r
 100                                                 // editor document loose the focus. In IE, we don't\r
 101                                                 // have support for it, so we reproduce it here, other\r
 102                                                 // than firing the selection change event.\r
 103 \r
 104                                                 var savedRange,\r
 105                                                         saveEnabled;\r
 106 \r
 107                                                 // "onfocusin" is fired before "onfocus". It makes it\r
 108                                                 // possible to restore the selection before click\r
 109                                                 // events get executed.\r
 110                                                 doc.on( 'focusin', function()\r
 111                                                         {\r
 112                                                                 // If we have saved a range, restore it at this\r
 113                                                                 // point.\r
 114                                                                 if ( savedRange )\r
 115                                                                 {\r
 116                                                                         // Well not break because of this.\r
 117                                                                         try\r
 118                                                                         {\r
 119                                                                                 savedRange.select();\r
 120                                                                         }\r
 121                                                                         catch (e)\r
 122                                                                         {}\r
 123 \r
 124                                                                         savedRange = null;\r
 125                                                                 }\r
 126                                                         });\r
 127 \r
 128                                                 editor.window.on( 'focus', function()\r
 129                                                         {\r
 130                                                                 // Enable selections to be saved.\r
 131                                                                 saveEnabled = true;\r
 132 \r
 133                                                                 saveSelection();\r
 134                                                         });\r
 135 \r
 136                                                 // Check document selection before 'blur' fired, this\r
 137                                                 // will prevent us from breaking text selection somewhere\r
 138                                                 // else on the host page.(#3909)\r
 139                                                 editor.document.on( 'beforedeactivate', function()\r
 140                                                         {\r
 141                                                                 // Disable selections from being saved.\r
 142                                                                 saveEnabled = false;\r
 143 \r
 144                                                                 // IE may leave the selection still inside the\r
 145                                                                 // document. Let's force it to be removed.\r
 146                                                                 // TODO: The following has effect for\r
 147                                                                 // collapsed selections.\r
 148                                                                 editor.document.$.execCommand( 'Unselect' );\r
 149                                                         });\r
 150 \r
 151                                                 // IE fires the "selectionchange" event when clicking\r
 152                                                 // inside a selection. We don't want to capture that.\r
 153                                                 doc.on( 'mousedown', disableSave );\r
 154                                                 doc.on( 'mouseup',\r
 155                                                         function()\r
 156                                                         {\r
 157                                                                 saveEnabled = true;\r
 158                                                                 setTimeout( function()\r
 159                                                                         {\r
 160                                                                                 saveSelection( true );\r
 161                                                                         },\r
 162                                                                         0 );\r
 163                                                         });\r
 164 \r
 165                                                 doc.on( 'keydown', disableSave );\r
 166                                                 doc.on( 'keyup',\r
 167                                                         function()\r
 168                                                         {\r
 169                                                                 saveEnabled = true;\r
 170                                                                 saveSelection();\r
 171                                                         });\r
 172 \r
 173 \r
 174                                                 // IE is the only to provide the "selectionchange"\r
 175                                                 // event.\r
 176                                                 doc.on( 'selectionchange', saveSelection );\r
 177 \r
 178                                                 function disableSave()\r
 179                                                 {\r
 180                                                         saveEnabled = false;\r
 181                                                 }\r
 182 \r
 183                                                 function saveSelection( testIt )\r
 184                                                 {\r
 185                                                         if ( saveEnabled )\r
 186                                                         {\r
 187                                                                 var doc = editor.document,\r
 188                                                                         sel = doc && doc.$.selection;\r
 189 \r
 190                                                                 // There is a very specific case, when clicking\r
 191                                                                 // inside a text selection. In that case, the\r
 192                                                                 // selection collapses at the clicking point,\r
 193                                                                 // but the selection object remains in an\r
 194                                                                 // unknown state, making createRange return a\r
 195                                                                 // range at the very start of the document. In\r
 196                                                                 // such situation we have to test the range, to\r
 197                                                                 // be sure it's valid.\r
 198                                                                 if ( testIt && sel && sel.type == 'None' )\r
 199                                                                 {\r
 200                                                                         // The "InsertImage" command can be used to\r
 201                                                                         // test whether the selection is good or not.\r
 202                                                                         // If not, it's enough to give some time to\r
 203                                                                         // IE to put things in order for us.\r
 204                                                                         if ( !doc.$.queryCommandEnabled( 'InsertImage' ) )\r
 205                                                                         {\r
 206                                                                                 CKEDITOR.tools.setTimeout( saveSelection, 50, this, true );\r
 207                                                                                 return;\r
 208                                                                         }\r
 209                                                                 }\r
 210 \r
 211                                                                 savedRange = sel && sel.createRange();\r
 212 \r
 213                                                                 checkSelectionChangeTimeout.call( editor );\r
 214                                                         }\r
 215                                                 }\r
 216                                         }\r
 217                                         else\r
 218                                         {\r
 219                                                 // In other browsers, we make the selection change\r
 220                                                 // check based on other events, like clicks or keys\r
 221                                                 // press.\r
 222 \r
 223                                                 doc.on( 'mouseup', checkSelectionChangeTimeout, editor );\r
 224                                                 doc.on( 'keyup', checkSelectionChangeTimeout, editor );\r
 225                                         }\r
 226                                 });\r
 227 \r
 228                         editor.addCommand( 'selectAll', selectAllCmd );\r
 229                         editor.ui.addButton( 'SelectAll',\r
 230                                 {\r
 231                                         label : editor.lang.selectAll,\r
 232                                         command : 'selectAll'\r
 233                                 });\r
 234 \r
 235                         editor.selectionChange = checkSelectionChangeTimeout;\r
 236                 }\r
 237         });\r
 238 \r
 239         /**\r
 240          * Gets the current selection from the editing area when in WYSIWYG mode.\r
 241          * @returns {CKEDITOR.dom.selection} A selection object or null if not on\r
 242          *              WYSIWYG mode or no selection is available.\r
 243          * @example\r
 244          * var selection = CKEDITOR.instances.editor1.<b>getSelection()</b>;\r
 245          * alert( selection.getType() );\r
 246          */\r
 247         CKEDITOR.editor.prototype.getSelection = function()\r
 248         {\r
 249                 return this.document && this.document.getSelection();\r
 250         };\r
 251 \r
 252         CKEDITOR.editor.prototype.forceNextSelectionCheck = function()\r
 253         {\r
 254                 delete this._.selectionPreviousPath;\r
 255         };\r
 256 \r
 257         /**\r
 258          * Gets the current selection from the document.\r
 259          * @returns {CKEDITOR.dom.selection} A selection object.\r
 260          * @example\r
 261          * var selection = CKEDITOR.instances.editor1.document.<b>getSelection()</b>;\r
 262          * alert( selection.getType() );\r
 263          */\r
 264         CKEDITOR.dom.document.prototype.getSelection = function()\r
 265         {\r
 266                 var sel = new CKEDITOR.dom.selection( this );\r
 267                 return ( !sel || sel.isInvalid ) ? null : sel;\r
 268         };\r
 269 \r
 270         /**\r
 271          * No selection.\r
 272          * @constant\r
 273          * @example\r
 274          * if ( editor.getSelection().getType() == CKEDITOR.SELECTION_NONE )\r
 275          *     alert( 'Nothing is selected' );\r
 276          */\r
 277         CKEDITOR.SELECTION_NONE         = 1;\r
 278 \r
 279         /**\r
 280          * Text or collapsed selection.\r
 281          * @constant\r
 282          * @example\r
 283          * if ( editor.getSelection().getType() == CKEDITOR.SELECTION_TEXT )\r
 284          *     alert( 'Text is selected' );\r
 285          */\r
 286         CKEDITOR.SELECTION_TEXT         = 2;\r
 287 \r
 288         /**\r
 289          * Element selection.\r
 290          * @constant\r
 291          * @example\r
 292          * if ( editor.getSelection().getType() == CKEDITOR.SELECTION_ELEMENT )\r
 293          *     alert( 'An element is selected' );\r
 294          */\r
 295         CKEDITOR.SELECTION_ELEMENT      = 3;\r
 296 \r
 297         /**\r
 298          * Manipulates the selection in a DOM document.\r
 299          * @constructor\r
 300          * @example\r
 301          */\r
 302         CKEDITOR.dom.selection = function( document )\r
 303         {\r
 304                 var lockedSelection = document.getCustomData( 'cke_locked_selection' );\r
 305 \r
 306                 if ( lockedSelection )\r
 307                         return lockedSelection;\r
 308 \r
 309                 this.document = document;\r
 310                 this.isLocked = false;\r
 311                 this._ =\r
 312                 {\r
 313                         cache : {}\r
 314                 };\r
 315 \r
 316                 /**\r
 317                  * IE BUG: The selection's document may be a different document than the\r
 318                  * editor document. Return null if that's the case.\r
 319                  */\r
 320                 if ( CKEDITOR.env.ie )\r
 321                 {\r
 322                         var range = this.getNative().createRange();\r
 323                         if ( !range\r
 324                                 || ( range.item && range.item(0).ownerDocument != this.document.$ )\r
 325                                 || ( range.parentElement && range.parentElement().ownerDocument != this.document.$ ) )\r
 326                         {\r
 327                                 this.isInvalid = true;\r
 328                         }\r
 329                 }\r
 330 \r
 331                 return this;\r
 332         };\r
 333 \r
 334         var styleObjectElements =\r
 335         {\r
 336                 img:1,hr:1,li:1,table:1,tr:1,td:1,embed:1,object:1,ol:1,ul:1,\r
 337                 a:1, input:1, form:1, select:1, textarea:1, button:1, fieldset:1, th:1, thead:1, tfoot:1\r
 338         };\r
 339 \r
 340         CKEDITOR.dom.selection.prototype =\r
 341         {\r
 342                 /**\r
 343                  * Gets the native selection object from the browser.\r
 344                  * @function\r
 345                  * @returns {Object} The native selection object.\r
 346                  * @example\r
 347                  * var selection = editor.getSelection().<b>getNative()</b>;\r
 348                  */\r
 349                 getNative :\r
 350                         CKEDITOR.env.ie ?\r
 351                                 function()\r
 352                                 {\r
 353                                         return this._.cache.nativeSel || ( this._.cache.nativeSel = this.document.$.selection );\r
 354                                 }\r
 355                         :\r
 356                                 function()\r
 357                                 {\r
 358                                         return this._.cache.nativeSel || ( this._.cache.nativeSel = this.document.getWindow().$.getSelection() );\r
 359                                 },\r
 360 \r
 361                 /**\r
 362                  * Gets the type of the current selection. The following values are\r
 363                  * available:\r
 364                  * <ul>\r
 365                  *              <li>{@link CKEDITOR.SELECTION_NONE} (1): No selection.</li>\r
 366                  *              <li>{@link CKEDITOR.SELECTION_TEXT} (2): Text is selected or\r
 367                  *                      collapsed selection.</li>\r
 368                  *              <li>{@link CKEDITOR.SELECTION_ELEMENT} (3): A element\r
 369                  *                      selection.</li>\r
 370                  * </ul>\r
 371                  * @function\r
 372                  * @returns {Number} One of the following constant values:\r
 373                  *              {@link CKEDITOR.SELECTION_NONE}, {@link CKEDITOR.SELECTION_TEXT} or\r
 374                  *              {@link CKEDITOR.SELECTION_ELEMENT}.\r
 375                  * @example\r
 376                  * if ( editor.getSelection().<b>getType()</b> == CKEDITOR.SELECTION_TEXT )\r
 377                  *     alert( 'Text is selected' );\r
 378                  */\r
 379                 getType :\r
 380                         CKEDITOR.env.ie ?\r
 381                                 function()\r
 382                                 {\r
 383                                         var cache = this._.cache;\r
 384                                         if ( cache.type )\r
 385                                                 return cache.type;\r
 386 \r
 387                                         var type = CKEDITOR.SELECTION_NONE;\r
 388 \r
 389                                         try\r
 390                                         {\r
 391                                                 var sel = this.getNative(),\r
 392                                                         ieType = sel.type;\r
 393 \r
 394                                                 if ( ieType == 'Text' )\r
 395                                                         type = CKEDITOR.SELECTION_TEXT;\r
 396 \r
 397                                                 if ( ieType == 'Control' )\r
 398                                                         type = CKEDITOR.SELECTION_ELEMENT;\r
 399 \r
 400                                                 // It is possible that we can still get a text range\r
 401                                                 // object even when type == 'None' is returned by IE.\r
 402                                                 // So we'd better check the object returned by\r
 403                                                 // createRange() rather than by looking at the type.\r
 404                                                 if ( sel.createRange().parentElement )\r
 405                                                         type = CKEDITOR.SELECTION_TEXT;\r
 406                                         }\r
 407                                         catch(e) {}\r
 408 \r
 409                                         return ( cache.type = type );\r
 410                                 }\r
 411                         :\r
 412                                 function()\r
 413                                 {\r
 414                                         var cache = this._.cache;\r
 415                                         if ( cache.type )\r
 416                                                 return cache.type;\r
 417 \r
 418                                         var type = CKEDITOR.SELECTION_TEXT;\r
 419 \r
 420                                         var sel = this.getNative();\r
 421 \r
 422                                         if ( !sel )\r
 423                                                 type = CKEDITOR.SELECTION_NONE;\r
 424                                         else if ( sel.rangeCount == 1 )\r
 425                                         {\r
 426                                                 // Check if the actual selection is a control (IMG,\r
 427                                                 // TABLE, HR, etc...).\r
 428 \r
 429                                                 var range = sel.getRangeAt(0),\r
 430                                                         startContainer = range.startContainer;\r
 431 \r
 432                                                 if ( startContainer == range.endContainer\r
 433                                                         && startContainer.nodeType == 1\r
 434                                                         && ( range.endOffset - range.startOffset ) == 1\r
 435                                                         && styleObjectElements[ startContainer.childNodes[ range.startOffset ].nodeName.toLowerCase() ] )\r
 436                                                 {\r
 437                                                         type = CKEDITOR.SELECTION_ELEMENT;\r
 438                                                 }\r
 439                                         }\r
 440 \r
 441                                         return ( cache.type = type );\r
 442                                 },\r
 443 \r
 444                 getRanges :\r
 445                         CKEDITOR.env.ie ?\r
 446                                 ( function()\r
 447                                 {\r
 448                                         // Finds the container and offset for a specific boundary\r
 449                                         // of an IE range.\r
 450                                         var getBoundaryInformation = function( range, start )\r
 451                                         {\r
 452                                                 // Creates a collapsed range at the requested boundary.\r
 453                                                 range = range.duplicate();\r
 454                                                 range.collapse( start );\r
 455 \r
 456                                                 // Gets the element that encloses the range entirely.\r
 457                                                 var parent = range.parentElement();\r
 458                                                 var siblings = parent.childNodes;\r
 459 \r
 460                                                 var testRange;\r
 461 \r
 462                                                 for ( var i = 0 ; i < siblings.length ; i++ )\r
 463                                                 {\r
 464                                                         var child = siblings[ i ];\r
 465                                                         if ( child.nodeType == 1 )\r
 466                                                         {\r
 467                                                                 testRange = range.duplicate();\r
 468 \r
 469                                                                 testRange.moveToElementText( child );\r
 470                                                                 testRange.collapse();\r
 471 \r
 472                                                                 var comparison = testRange.compareEndPoints( 'StartToStart', range );\r
 473 \r
 474                                                                 if ( comparison > 0 )\r
 475                                                                         break;\r
 476                                                                 else if ( comparison === 0 )\r
 477                                                                         return {\r
 478                                                                                 container : parent,\r
 479                                                                                 offset : i\r
 480                                                                         };\r
 481 \r
 482                                                                 testRange = null;\r
 483                                                         }\r
 484                                                 }\r
 485 \r
 486                                                 if ( !testRange )\r
 487                                                 {\r
 488                                                         testRange = range.duplicate();\r
 489                                                         testRange.moveToElementText( parent );\r
 490                                                         testRange.collapse( false );\r
 491                                                 }\r
 492 \r
 493                                                 testRange.setEndPoint( 'StartToStart', range );\r
 494                                                 // IE report line break as CRLF with range.text but\r
 495                                                 // only LF with textnode.nodeValue, normalize them to avoid\r
 496                                                 // breaking character counting logic below. (#3949)\r
 497                                                 var distance = testRange.text.replace( /(\r\n|\r)/g, '\n' ).length;\r
 498 \r
 499                                                 while ( distance > 0 )\r
 500                                                         distance -= siblings[ --i ].nodeValue.length;\r
 501 \r
 502                                                 if ( distance === 0 )\r
 503                                                 {\r
 504                                                         return {\r
 505                                                                 container : parent,\r
 506                                                                 offset : i\r
 507                                                         };\r
 508                                                 }\r
 509                                                 else\r
 510                                                 {\r
 511                                                         return {\r
 512                                                                 container : siblings[ i ],\r
 513                                                                 offset : -distance\r
 514                                                         };\r
 515                                                 }\r
 516                                         };\r
 517 \r
 518                                         return function()\r
 519                                         {\r
 520                                                 var cache = this._.cache;\r
 521                                                 if ( cache.ranges )\r
 522                                                         return cache.ranges;\r
 523 \r
 524                                                 // IE doesn't have range support (in the W3C way), so we\r
 525                                                 // need to do some magic to transform selections into\r
 526                                                 // CKEDITOR.dom.range instances.\r
 527 \r
 528                                                 var sel = this.getNative(),\r
 529                                                         nativeRange = sel && sel.createRange(),\r
 530                                                         type = this.getType(),\r
 531                                                         range;\r
 532 \r
 533                                                 if ( !sel )\r
 534                                                         return [];\r
 535 \r
 536                                                 if ( type == CKEDITOR.SELECTION_TEXT )\r
 537                                                 {\r
 538                                                         range = new CKEDITOR.dom.range( this.document );\r
 539 \r
 540                                                         var boundaryInfo = getBoundaryInformation( nativeRange, true );\r
 541                                                         range.setStart( new CKEDITOR.dom.node( boundaryInfo.container ), boundaryInfo.offset );\r
 542 \r
 543                                                         boundaryInfo = getBoundaryInformation( nativeRange );\r
 544                                                         range.setEnd( new CKEDITOR.dom.node( boundaryInfo.container ), boundaryInfo.offset );\r
 545 \r
 546                                                         return ( cache.ranges = [ range ] );\r
 547                                                 }\r
 548                                                 else if ( type == CKEDITOR.SELECTION_ELEMENT )\r
 549                                                 {\r
 550                                                         var retval = this._.cache.ranges = [];\r
 551 \r
 552                                                         for ( var i = 0 ; i < nativeRange.length ; i++ )\r
 553                                                         {\r
 554                                                                 var element = nativeRange.item( i ),\r
 555                                                                         parentElement = element.parentNode,\r
 556                                                                         j = 0;\r
 557 \r
 558                                                                 range = new CKEDITOR.dom.range( this.document );\r
 559 \r
 560                                                                 for (; j < parentElement.childNodes.length && parentElement.childNodes[j] != element ; j++ )\r
 561                                                                 { /*jsl:pass*/ }\r
 562 \r
 563                                                                 range.setStart( new CKEDITOR.dom.node( parentElement ), j );\r
 564                                                                 range.setEnd( new CKEDITOR.dom.node( parentElement ), j + 1 );\r
 565                                                                 retval.push( range );\r
 566                                                         }\r
 567 \r
 568                                                         return retval;\r
 569                                                 }\r
 570 \r
 571                                                 return ( cache.ranges = [] );\r
 572                                         };\r
 573                                 })()\r
 574                         :\r
 575                                 function()\r
 576                                 {\r
 577                                         var cache = this._.cache;\r
 578                                         if ( cache.ranges )\r
 579                                                 return cache.ranges;\r
 580 \r
 581                                         // On browsers implementing the W3C range, we simply\r
 582                                         // tranform the native ranges in CKEDITOR.dom.range\r
 583                                         // instances.\r
 584 \r
 585                                         var ranges = [];\r
 586                                         var sel = this.getNative();\r
 587 \r
 588                                         if ( !sel )\r
 589                                                 return [];\r
 590 \r
 591                                         for ( var i = 0 ; i < sel.rangeCount ; i++ )\r
 592                                         {\r
 593                                                 var nativeRange = sel.getRangeAt( i );\r
 594                                                 var range = new CKEDITOR.dom.range( this.document );\r
 595 \r
 596                                                 range.setStart( new CKEDITOR.dom.node( nativeRange.startContainer ), nativeRange.startOffset );\r
 597                                                 range.setEnd( new CKEDITOR.dom.node( nativeRange.endContainer ), nativeRange.endOffset );\r
 598                                                 ranges.push( range );\r
 599                                         }\r
 600 \r
 601                                         return ( cache.ranges = ranges );\r
 602                                 },\r
 603 \r
 604                 /**\r
 605                  * Gets the DOM element in which the selection starts.\r
 606                  * @returns {CKEDITOR.dom.element} The element at the beginning of the\r
 607                  *              selection.\r
 608                  * @example\r
 609                  * var element = editor.getSelection().<b>getStartElement()</b>;\r
 610                  * alert( element.getName() );\r
 611                  */\r
 612                 getStartElement : function()\r
 613                 {\r
 614                         var cache = this._.cache;\r
 615                         if ( cache.startElement !== undefined )\r
 616                                 return cache.startElement;\r
 617 \r
 618                         var node,\r
 619                                 sel = this.getNative();\r
 620 \r
 621                         switch ( this.getType() )\r
 622                         {\r
 623                                 case CKEDITOR.SELECTION_ELEMENT :\r
 624                                         return this.getSelectedElement();\r
 625 \r
 626                                 case CKEDITOR.SELECTION_TEXT :\r
 627 \r
 628                                         var range = this.getRanges()[0];\r
 629 \r
 630                                         if ( range )\r
 631                                         {\r
 632                                                 if ( !range.collapsed )\r
 633                                                 {\r
 634                                                         range.optimize();\r
 635 \r
 636                                                         // Decrease the range content to exclude particial\r
 637                                                         // selected node on the start which doesn't have\r
 638                                                         // visual impact. ( #3231 )\r
 639                                                         while( true )\r
 640                                                         {\r
 641                                                                 var startContainer = range.startContainer,\r
 642                                                                         startOffset = range.startOffset;\r
 643                                                                 if ( startOffset == ( startContainer.getChildCount ?\r
 644                                                                         startContainer.getChildCount() : startContainer.getLength() ) )\r
 645                                                                         range.setStartAfter( startContainer );\r
 646                                                                 else break;\r
 647                                                         }\r
 648 \r
 649                                                         node = range.startContainer;\r
 650 \r
 651                                                         if ( node.type != CKEDITOR.NODE_ELEMENT )\r
 652                                                                 return node.getParent();\r
 653 \r
 654                                                         node = node.getChild( range.startOffset );\r
 655 \r
 656                                                         if ( !node || node.type != CKEDITOR.NODE_ELEMENT )\r
 657                                                                 return range.startContainer;\r
 658 \r
 659                                                         var child = node.getFirst();\r
 660                                                         while (  child && child.type == CKEDITOR.NODE_ELEMENT )\r
 661                                                         {\r
 662                                                                 node = child;\r
 663                                                                 child = child.getFirst();\r
 664                                                         }\r
 665 \r
 666                                                         return node;\r
 667                                                 }\r
 668                                         }\r
 669 \r
 670                                         if ( CKEDITOR.env.ie )\r
 671                                         {\r
 672                                                 range = sel.createRange();\r
 673                                                 range.collapse( true );\r
 674 \r
 675                                                 node = range.parentElement();\r
 676                                         }\r
 677                                         else\r
 678                                         {\r
 679                                                 node = sel.anchorNode;\r
 680 \r
 681                                                 if ( node.nodeType != 1 )\r
 682                                                         node = node.parentNode;\r
 683                                         }\r
 684                         }\r
 685 \r
 686                         return cache.startElement = ( node ? new CKEDITOR.dom.element( node ) : null );\r
 687                 },\r
 688 \r
 689                 /**\r
 690                  * Gets the current selected element.\r
 691                  * @returns {CKEDITOR.dom.element} The selected element. Null if no\r
 692                  *              selection is available or the selection type is not\r
 693                  *              {@link CKEDITOR.SELECTION_ELEMENT}.\r
 694                  * @example\r
 695                  * var element = editor.getSelection().<b>getSelectedElement()</b>;\r
 696                  * alert( element.getName() );\r
 697                  */\r
 698                 getSelectedElement : function()\r
 699                 {\r
 700                         var cache = this._.cache;\r
 701                         if ( cache.selectedElement !== undefined )\r
 702                                 return cache.selectedElement;\r
 703 \r
 704                         var node;\r
 705 \r
 706                         if ( this.getType() == CKEDITOR.SELECTION_ELEMENT )\r
 707                         {\r
 708                                 var sel = this.getNative();\r
 709 \r
 710                                 if ( CKEDITOR.env.ie )\r
 711                                 {\r
 712                                         try\r
 713                                         {\r
 714                                                 node = sel.createRange().item(0);\r
 715                                         }\r
 716                                         catch(e) {}\r
 717                                 }\r
 718                                 else\r
 719                                 {\r
 720                                         var range = sel.getRangeAt( 0 );\r
 721                                         node = range.startContainer.childNodes[ range.startOffset ];\r
 722                                 }\r
 723                         }\r
 724 \r
 725                         return cache.selectedElement = ( node ? new CKEDITOR.dom.element( node ) : null );\r
 726                 },\r
 727 \r
 728                 lock : function()\r
 729                 {\r
 730                         // Call all cacheable function.\r
 731                         this.getRanges();\r
 732                         this.getStartElement();\r
 733                         this.getSelectedElement();\r
 734 \r
 735                         // The native selection is not available when locked.\r
 736                         this._.cache.nativeSel = {};\r
 737 \r
 738                         this.isLocked = true;\r
 739 \r
 740                         // Save this selection inside the DOM document.\r
 741                         this.document.setCustomData( 'cke_locked_selection', this );\r
 742                 },\r
 743 \r
 744                 unlock : function( restore )\r
 745                 {\r
 746                         var doc = this.document,\r
 747                                 lockedSelection = doc.getCustomData( 'cke_locked_selection' );\r
 748 \r
 749                         if ( lockedSelection )\r
 750                         {\r
 751                                 doc.setCustomData( 'cke_locked_selection', null );\r
 752 \r
 753                                 if ( restore )\r
 754                                 {\r
 755                                         var selectedElement = lockedSelection.getSelectedElement(),\r
 756                                                 ranges = !selectedElement && lockedSelection.getRanges();\r
 757 \r
 758                                         this.isLocked = false;\r
 759                                         this.reset();\r
 760 \r
 761                                         doc.getBody().focus();\r
 762 \r
 763                                         if ( selectedElement )\r
 764                                                 this.selectElement( selectedElement );\r
 765                                         else\r
 766                                                 this.selectRanges( ranges );\r
 767                                 }\r
 768                         }\r
 769 \r
 770                         if  ( !lockedSelection || !restore )\r
 771                         {\r
 772                                 this.isLocked = false;\r
 773                                 this.reset();\r
 774                         }\r
 775                 },\r
 776 \r
 777                 reset : function()\r
 778                 {\r
 779                         this._.cache = {};\r
 780                 },\r
 781 \r
 782                 selectElement : function( element )\r
 783                 {\r
 784                         if ( this.isLocked )\r
 785                         {\r
 786                                 var range = new CKEDITOR.dom.range( this.document );\r
 787                                 range.setStartBefore( element );\r
 788                                 range.setEndAfter( element );\r
 789 \r
 790                                 this._.cache.selectedElement = element;\r
 791                                 this._.cache.startElement = element;\r
 792                                 this._.cache.ranges = [ range ];\r
 793                                 this._.cache.type = CKEDITOR.SELECTION_ELEMENT;\r
 794 \r
 795                                 return;\r
 796                         }\r
 797 \r
 798                         if ( CKEDITOR.env.ie )\r
 799                         {\r
 800                                 this.getNative().empty();\r
 801 \r
 802                                 try\r
 803                                 {\r
 804                                         // Try to select the node as a control.\r
 805                                         range = this.document.$.body.createControlRange();\r
 806                                         range.addElement( element.$ );\r
 807                                         range.select();\r
 808                                 }\r
 809                                 catch(e)\r
 810                                 {\r
 811                                         // If failed, select it as a text range.\r
 812                                         range = this.document.$.body.createTextRange();\r
 813                                         range.moveToElementText( element.$ );\r
 814                                         range.select();\r
 815                                 }\r
 816 \r
 817                                 this.reset();\r
 818                         }\r
 819                         else\r
 820                         {\r
 821                                 // Create the range for the element.\r
 822                                 range = this.document.$.createRange();\r
 823                                 range.selectNode( element.$ );\r
 824 \r
 825                                 // Select the range.\r
 826                                 var sel = this.getNative();\r
 827                                 sel.removeAllRanges();\r
 828                                 sel.addRange( range );\r
 829 \r
 830                                 this.reset();\r
 831                         }\r
 832                 },\r
 833 \r
 834                 selectRanges : function( ranges )\r
 835                 {\r
 836                         if ( this.isLocked )\r
 837                         {\r
 838                                 this._.cache.selectedElement = null;\r
 839                                 this._.cache.startElement = ranges[ 0 ].getTouchedStartNode();\r
 840                                 this._.cache.ranges = ranges;\r
 841                                 this._.cache.type = CKEDITOR.SELECTION_TEXT;\r
 842 \r
 843                                 return;\r
 844                         }\r
 845 \r
 846                         if ( CKEDITOR.env.ie )\r
 847                         {\r
 848                                 // IE doesn't accept multiple ranges selection, so we just\r
 849                                 // select the first one.\r
 850                                 if ( ranges[ 0 ] )\r
 851                                         ranges[ 0 ].select();\r
 852 \r
 853                                 this.reset();\r
 854                         }\r
 855                         else\r
 856                         {\r
 857                                 var sel = this.getNative();\r
 858                                 sel.removeAllRanges();\r
 859 \r
 860                                 for ( var i = 0 ; i < ranges.length ; i++ )\r
 861                                 {\r
 862                                         var range = ranges[ i ];\r
 863                                         var nativeRange = this.document.$.createRange();\r
 864                                         var startContainer = range.startContainer;\r
 865 \r
 866                                         // In FF2, if we have a collapsed range, inside an empty\r
 867                                         // element, we must add something to it otherwise the caret\r
 868                                         // will not be visible.\r
 869                                         if ( range.collapsed &&\r
 870                                                 ( CKEDITOR.env.gecko && CKEDITOR.env.version < 10900 ) &&\r
 871                                                 startContainer.type == CKEDITOR.NODE_ELEMENT &&\r
 872                                                 !startContainer.getChildCount() )\r
 873                                         {\r
 874                                                 startContainer.appendText( '' );\r
 875                                         }\r
 876 \r
 877                                         nativeRange.setStart( startContainer.$, range.startOffset );\r
 878                                         nativeRange.setEnd( range.endContainer.$, range.endOffset );\r
 879 \r
 880                                         // Select the range.\r
 881                                         sel.addRange( nativeRange );\r
 882                                 }\r
 883 \r
 884                                 this.reset();\r
 885                         }\r
 886                 },\r
 887 \r
 888                 createBookmarks : function( serializable )\r
 889                 {\r
 890                         var retval = [],\r
 891                                 ranges = this.getRanges(),\r
 892                                 length = ranges.length,\r
 893                                 bookmark;\r
 894                         for ( var i = 0; i < length ; i++ )\r
 895                         {\r
 896                             retval.push( bookmark = ranges[ i ].createBookmark( serializable, true ) );\r
 897 \r
 898                                 serializable = bookmark.serializable;\r
 899 \r
 900                                 var bookmarkStart = serializable ? this.document.getById( bookmark.startNode ) : bookmark.startNode,\r
 901                                         bookmarkEnd = serializable ? this.document.getById( bookmark.endNode ) : bookmark.endNode;\r
 902 \r
 903                             // Updating the offset values for rest of ranges which have been mangled(#3256).\r
 904                             for ( var j = i + 1 ; j < length ; j++ )\r
 905                             {\r
 906                                 var dirtyRange = ranges[ j ],\r
 907                                        rangeStart = dirtyRange.startContainer,\r
 908                                        rangeEnd = dirtyRange.endContainer;\r
 909 \r
 910                                rangeStart.equals( bookmarkStart.getParent() ) && dirtyRange.startOffset++;\r
 911                                rangeStart.equals( bookmarkEnd.getParent() ) && dirtyRange.startOffset++;\r
 912                                rangeEnd.equals( bookmarkStart.getParent() ) && dirtyRange.endOffset++;\r
 913                                rangeEnd.equals( bookmarkEnd.getParent() ) && dirtyRange.endOffset++;\r
 914                             }\r
 915                         }\r
 916 \r
 917                         return retval;\r
 918                 },\r
 919 \r
 920                 createBookmarks2 : function( normalized )\r
 921                 {\r
 922                         var bookmarks = [],\r
 923                                 ranges = this.getRanges();\r
 924 \r
 925                         for ( var i = 0 ; i < ranges.length ; i++ )\r
 926                                 bookmarks.push( ranges[i].createBookmark2( normalized ) );\r
 927 \r
 928                         return bookmarks;\r
 929                 },\r
 930 \r
 931                 selectBookmarks : function( bookmarks )\r
 932                 {\r
 933                         var ranges = [];\r
 934                         for ( var i = 0 ; i < bookmarks.length ; i++ )\r
 935                         {\r
 936                                 var range = new CKEDITOR.dom.range( this.document );\r
 937                                 range.moveToBookmark( bookmarks[i] );\r
 938                                 ranges.push( range );\r
 939                         }\r
 940                         this.selectRanges( ranges );\r
 941                         return this;\r
 942                 }\r
 943         };\r
 944 })();\r
 945 \r
 946 CKEDITOR.dom.range.prototype.select =\r
 947         CKEDITOR.env.ie ?\r
 948                 // V2\r
 949                 function( forceExpand )\r
 950                 {\r
 951                         var collapsed = this.collapsed;\r
 952                         var isStartMarkerAlone;\r
 953                         var dummySpan;\r
 954 \r
 955                         var bookmark = this.createBookmark();\r
 956 \r
 957                         // Create marker tags for the start and end boundaries.\r
 958                         var startNode = bookmark.startNode;\r
 959 \r
 960                         var endNode;\r
 961                         if ( !collapsed )\r
 962                                 endNode = bookmark.endNode;\r
 963 \r
 964                         // Create the main range which will be used for the selection.\r
 965                         var ieRange = this.document.$.body.createTextRange();\r
 966 \r
 967                         // Position the range at the start boundary.\r
 968                         ieRange.moveToElementText( startNode.$ );\r
 969                         ieRange.moveStart( 'character', 1 );\r
 970 \r
 971                         if ( endNode )\r
 972                         {\r
 973                                 // Create a tool range for the end.\r
 974                                 var ieRangeEnd = this.document.$.body.createTextRange();\r
 975 \r
 976                                 // Position the tool range at the end.\r
 977                                 ieRangeEnd.moveToElementText( endNode.$ );\r
 978 \r
 979                                 // Move the end boundary of the main range to match the tool range.\r
 980                                 ieRange.setEndPoint( 'EndToEnd', ieRangeEnd );\r
 981                                 ieRange.moveEnd( 'character', -1 );\r
 982                         }\r
 983                         else\r
 984                         {\r
 985                                 // The isStartMarkerAlone logic comes from V2. It guarantees that the lines\r
 986                                 // will expand and that the cursor will be blinking on the right place.\r
 987                                 // Actually, we are using this flag just to avoid using this hack in all\r
 988                                 // situations, but just on those needed.\r
 989                                 isStartMarkerAlone = forceExpand || !startNode.hasPrevious() || ( startNode.getPrevious().is && startNode.getPrevious().is( 'br' ) );\r
 990 \r
 991                                 // Append a temporary <span>&#65279;</span> before the selection.\r
 992                                 // This is needed to avoid IE destroying selections inside empty\r
 993                                 // inline elements, like <b></b> (#253).\r
 994                                 // It is also needed when placing the selection right after an inline\r
 995                                 // element to avoid the selection moving inside of it.\r
 996                                 dummySpan = this.document.createElement( 'span' );\r
 997                                 dummySpan.setHtml( '&#65279;' );        // Zero Width No-Break Space (U+FEFF). See #1359.\r
 998                                 dummySpan.insertBefore( startNode );\r
 999 \r
1000                                 if ( isStartMarkerAlone )\r
1001                                 {\r
1002                                         // To expand empty blocks or line spaces after <br>, we need\r
1003                                         // instead to have any char, which will be later deleted using the\r
1004                                         // selection.\r
1005                                         // \ufeff = Zero Width No-Break Space (U+FEFF). (#1359)\r
1006                                         this.document.createText( '\ufeff' ).insertBefore( startNode );\r
1007                                 }\r
1008                         }\r
1009 \r
1010                         // Remove the markers (reset the position, because of the changes in the DOM tree).\r
1011                         this.setStartBefore( startNode );\r
1012                         startNode.remove();\r
1013 \r
1014                         if ( collapsed )\r
1015                         {\r
1016                                 if ( isStartMarkerAlone )\r
1017                                 {\r
1018                                         // Move the selection start to include the temporary \ufeff.\r
1019                                         ieRange.moveStart( 'character', -1 );\r
1020 \r
1021                                         ieRange.select();\r
1022 \r
1023                                         // Remove our temporary stuff.\r
1024                                         this.document.$.selection.clear();\r
1025                                 }\r
1026                                 else\r
1027                                         ieRange.select();\r
1028 \r
1029                                 dummySpan.remove();\r
1030                         }\r
1031                         else\r
1032                         {\r
1033                                 this.setEndBefore( endNode );\r
1034                                 endNode.remove();\r
1035                                 ieRange.select();\r
1036                         }\r
1037                 }\r
1038         :\r
1039                 function()\r
1040                 {\r
1041                         var startContainer = this.startContainer;\r
1042 \r
1043                         // If we have a collapsed range, inside an empty element, we must add\r
1044                         // something to it, otherwise the caret will not be visible.\r
1045                         if ( this.collapsed && startContainer.type == CKEDITOR.NODE_ELEMENT && !startContainer.getChildCount() )\r
1046                                 startContainer.append( new CKEDITOR.dom.text( '' ) );\r
1047 \r
1048                         var nativeRange = this.document.$.createRange();\r
1049                         nativeRange.setStart( startContainer.$, this.startOffset );\r
1050 \r
1051                         try\r
1052                         {\r
1053                                 nativeRange.setEnd( this.endContainer.$, this.endOffset );\r
1054                         }\r
1055                         catch ( e )\r
1056                         {\r
1057                                 // There is a bug in Firefox implementation (it would be too easy\r
1058                                 // otherwise). The new start can't be after the end (W3C says it can).\r
1059                                 // So, let's create a new range and collapse it to the desired point.\r
1060                                 if ( e.toString().indexOf( 'NS_ERROR_ILLEGAL_VALUE' ) >= 0 )\r
1061                                 {\r
1062                                         this.collapse( true );\r
1063                                         nativeRange.setEnd( this.endContainer.$, this.endOffset );\r
1064                                 }\r
1065                                 else\r
1066                                         throw( e );\r
1067                         }\r
1068 \r
1069                         var selection = this.document.getSelection().getNative();\r
1070                         selection.removeAllRanges();\r
1071                         selection.addRange( nativeRange );\r
1072                 };\r